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Halysitidae
''Halysitidae'' is an extinct family of tabulate corals. These tabulate corals lived from Ordovician to Devonian (from 471.8 to 412.3 Ma). Fossil corals of the family ''Halysitidae'' have been found in the sediments of Afghanistan, Canada, United States, Venezuela and Australia. Genera * '' Acanthohalysites'' Hamada 1957 * '' Catenipora'' Lamarck 1816 * '' Cystihalysites'' Chernyshev 1941 * '' Eocatenipora'' Hamada 1957 * '' Falsicatenipora'' Hamada 1958 * ''Halysites ''Halysites'' (meaning ''chain coral'') is an extinct genus of tabulate coral. Colonies range from less than one to tens of centimeters in diameter, and they fed upon plankton. These tabulate corals lived from the Ordovician to the Devonian (f ...'' von Waldheim 1828 * '' Hexismia'' Sokolov 1955 * '' Quepora'' Sinclair 1955 * '' Schedohalysites'' Hamada 1957 * '' Solenihalysites'' Stasinska 1967 * '' Spumaeolites'' Zhizhina 1967 References Tabulata Prehistoric cnidarian families Ordovician first appea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catenipora
''Catenipora'' is an extinct genus of tabulate corals in the family Halysitidae ''Halysitidae'' is an extinct family of tabulate corals. These tabulate corals lived from Ordovician to Devonian (from 471.8 to 412.3 Ma). Fossil corals of the family ''Halysitidae'' have been found in the sediments of Afghanistan, Canada, Unite ..., known from the Ordovician to the Silurian. ''C. elegans'' is known from the Silurian of Estonia. Species * †''Catenipora approximata'' * †''Catenipora arctica'' * †''Catenipora capilliformis'' * †''Catenipora copulata'' * †''Catenipora crassaeformis'' * †''Catenipora distans'' * †''Catenipora elegans'' * †''Catenipora escharoides'' * †''Catenipora exilis'' * †''Catenipora gotlandica'' * †''Catenipora jingyangensis'' * †''Catenipora maxima'' * †''Catenipora obliqua'' * †''Catenipora panga'' * †''Catenipora robusta'' * †''Catenipora rubraeformis'' * †''Catenipora septosa'' * †''Catenipora tapaensis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordovician
The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. The Ordovician, named after the Celtic Britons, Welsh tribe of the Ordovices, was defined by Charles Lapworth in 1879 to resolve a dispute between followers of Adam Sedgwick and Roderick Murchison, who were placing the same Rock (geology), rock beds in North Wales in the Cambrian and Silurian systems, respectively. Lapworth recognized that the fossil fauna in the disputed Stratum, strata were different from those of either the Cambrian or the Silurian systems, and placed them in a system of their own. The Ordovician received international approval in 1960 (forty years after Lapworth's death), when it was adopted as an official period of the Paleozoic Era by the International Union of Geological Sciences, Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Cnidarian Families
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tabulata
Tabulata, commonly known as tabulate corals, are an order of extinct forms of coral. They are almost always colonial, forming colonies of individual hexagonal cells known as corallites defined by a skeleton of calcite, similar in appearance to a honeycomb. Adjacent cells are joined by small pores. Their distinguishing feature is their well-developed horizontal internal partitions (''tabulae'') within each cell, but reduced or absent vertical internal partitions ( ''septa''). They are usually smaller than rugose corals, but vary considerably in shape, from flat to conical to spherical. Around 300 species have been described. Among the most common tabulate corals in the fossil record are ''Aulopora'', ''Favosites'', ''Halysites'', ''Heliolites'', ''Pleurodictyum'', ''Sarcinula'' and '' Syringopora''. Tabulate corals with massive skeletons often contain endobiotic symbionts, such as cornulitids and ''Chaetosalpinx''. Like rugose corals, they lived entirely during the Paleozoi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halysites
''Halysites'' (meaning ''chain coral'') is an extinct genus of tabulate coral. Colonies range from less than one to tens of centimeters in diameter, and they fed upon plankton. These tabulate corals lived from the Ordovician to the Devonian (from 449.5 to 412.3 Ma). Fossils of ''Halysites'' species have been found in the sediments of North America, Europe, Asia and Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma .... Species Species in the genus ''Halysites'' include: * ''Halysites catenularia'' Linnaeus, 1767 * ''Halysites encrustans'' Buehler * ''Halysites grandis'' Sharkova, 1981 * ''Halysites infundibuliformis'' Buehler * ''Halysites junior'' Klaamann, 1961 * ''Halysites louisvillensis'' Stumm * ''Halysites meandrina'' Troost * ''Halysites magnitubus'' Buehler * ''Hal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silurian
The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozoic Era. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by a few million years. The base of the Silurian is set at a series of major Ordovician–Silurian extinction events when up to 60% of marine genera were wiped out. One important event in this period was the initial establishment of terrestrial life in what is known as the Silurian-Devonian Terrestrial Revolution: vascular plants emerged from more primitive land plants, dikaryan fungi started expanding and diversifying along with glomeromycotan fungi, and three groups of arthropods (myriapods, arachnids and hexapods) became fully terrestrialized. A significant evolutionary milestone during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
